Home / 7,928.78-11,871.30-5,975.06

Finding the Fourth Proportional to 7,928.78, 11,871.30 and 5,975.06

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Solution

The fourth proportional to 7,928.78, 11,871.30 and 5,975.06 is: 8,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.78 : 11,871.30 = 5,975.06 : x
  2. Step 2: Convert to fraction form
    7,928.78/11,871.30 = 5,975.06/x
  3. Step 3: Cross multiply
    7,928.78x = 11,871.30 × 5,975.06
  4. Step 4: Simplify right side
    7,928.78x = 70,931,729.78
  5. Step 5: Solve for x
    x = 70,931,729.78/7,928.78
  6. Step 6: Final answer
    x = 8,946.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.